Of course well fitted and broken in quality footwear is the most important thing and something that took me a while to figure out, "life is to short to wear cheap socks!" I like Thorlo socks and they make about a 100 different styles designed for specific activities. I prefer a midweight sock with a coolmax or polypro liner. It is VERY important to get your boots fitted with the socks you are going to wear. I also ALWAYS sprinkle foot powder(cornstarch) in my boots and socks, it helps keep your feet dry makes it easier to slide your feet into the boots. I also ALWAYS take an extra set of socks and liners(treated with cornstarch)in a ziploc bag in my pack. At lunch time I take my boots and socks off and let my feet cool off, at bare minimum I switch socks from one foot to the other. I also try to have two pairs of boots and alternate them daily. As soon as I get back to camp, I take my boots off and put on a pair of camp shoes.